Full notes
Full SIC-1 update
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Sandbox Mode (an open-ended task with customizable input, for experimentation/exploration)
Alternative color schemes (black-on-white, white-on-gray, amber phosphor, and a more accurate P1 green phosphor)
In-manual ASCII table
More in-game help near the beginning of the game
Arrow key navigation for menus
Many miscellaneous bug fixes
Source
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